Warning: Taylor Swift's new single "Shake It Off" will probably be stuck in your head for the rest of the day. The singer debuted the new track during a worldwide live stream of her upcoming album 1989 via Yahoo! and ABC News on Monday; the numerical name is also Taylor's birth year, and the album will hit stores Oct. 27. "Shake It Off" is incredibly catchy, and the accompanying music video features Taylor trying her hand at different dance styles including ballet, break dancing, and yes, even twerking. Check out the video for "Shake It Off" below, and let us know what you think of Taylor's latest project in the comments.